What aspect of vocabulary is emphasized in the Use of English section?

The focus of the Use of English section is primarily on the ability to convert words into different forms, which encompasses understanding how to manipulate vocabulary through processes like derivation and inflection. This means that candidates must demonstrate their capability to change words according to grammatical requirements. For instance, transforming a noun into an adjective or changing a verb into its correct tense or participle form is crucial, as it reflects a deeper mastery of the language and its structure.

The capacity to manipulate word forms illustrates not only vocabulary knowledge but also an understanding of syntax and semantic relationships within the language. This skill is essential for effectively using English in varied contexts, which is often tested in advanced English assessments like the CPE.

Other aspects, such as memory recall of definitions, spelling challenges, or familiarity with idiomatic expressions, while important in language learning, do not directly address the specific skill of transforming words, which is why this choice stands out as the most relevant to the objectives of the section.